An Early Step in the Evolution of Eukaryotic Cells Most

question 2

Multiple Choice

An early step in the evolution of eukaryotic cells most likely involved which of the following events?

• A) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into chloroplasts
• B) endosymbiosis of a photosynthetic archaeal cell in a larger bacterial host cell to escape toxic oxygen-the anaerobic archaea evolved into chloroplasts
• C) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into mitochondria
• D) evolution of an endomembrane system and subsequent evolution of mitochondria from a portion of the smooth endoplasmic reticulum

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Definitions:

Exchange

The act of giving one thing and receiving another in return.

Exchange Relationships

Interpersonal connections based on reciprocal exchange of benefits or favors.

Societal Progress

The development and improvement of society in terms of economic, social, cultural, or technological aspects.

Modern Societies

Contemporary communities characterized by advanced technological development, urbanization, and complex social structures.